In the fall of 1873, a wagon train of immigrants sets off from Missouri for the Montana Territory. Leading them is wagon master Jamie Ian MacCallister, a giant of a man who swears he can get them there by Christmas -- come hell or high snow drifts. The journey is plagued by brutal storms and rugged terrain, outlaws and hostile Indians. Just when things look nearly hopeless, two unlikely saviors arrive: an old mountain man known as Preacher and legendary frontiersman Smoke Jensen